Finding the Fourth Proportional to 30,870.42, 42,601.14 and 16,723.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,870.42 : 42,601.14 = 16,723.32 : x
2. Step 2: Convert to fraction form
   30,870.42/42,601.14 = 16,723.32/x
3. Step 3: Cross multiply
   30,870.42x = 42,601.14 × 16,723.32
4. Step 4: Simplify right side
   30,870.42x = 712,432,496.58
5. Step 5: Solve for x
   x = 712,432,496.58/30,870.42
6. Step 6: Final answer
   x = 23,078.16